/*
 * @(#)StreamRedirectThread.java	1.5 03/12/19
 *
 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright (c) 1997-2001 by Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
 * modify and redistribute this software in source and binary code form,
 * provided that i) this copyright notice and license appear on all copies of
 * the software; and ii) Licensee does not utilize the software in a manner
 * which is disparaging to Sun.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
 * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
 * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
 * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
 * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
 * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 * 
 * This software is not designed or intended for use in on-line control of
 * aircraft, air traffic, aircraft navigation or aircraft communications; or in
 * the design, construction, operation or maintenance of any nuclear
 * facility. Licensee represents and warrants that it will not use or
 * redistribute the Software for such purposes.
 */
package com.sun.tools.example.trace;

import java.io.*;

/**
 * StreamRedirectThread is a thread which copies it's input to
 * it's output and terminates when it completes.
 *
 * @author Robert Field
 * @version @(#) StreamRedirectThread.java 1.5 03/12/19 00:16:26
 */
class StreamRedirectThread extends Thread
{

    private final Reader in;
    private final Writer out;

    private static final int BUFFER_SIZE = 2048;

    /**
     * Set up for copy.
     *
     * @param name Name of the thread
     * @param in   Stream to copy from
     * @param out  Stream to copy to
     */
    StreamRedirectThread(String name, InputStream in, OutputStream out)
    {
        super(name);
        this.in = new InputStreamReader(in);
        this.out = new OutputStreamWriter(out);
        setPriority(Thread.MAX_PRIORITY - 1);
    }

    /**
     * Copy.
     */
    public void run()
    {
        try
        {
            char[] cbuf = new char[BUFFER_SIZE];
            int count;
            while ((count = in.read(cbuf, 0, BUFFER_SIZE)) >= 0)
            {
                out.write(cbuf, 0, count);
            }
            out.flush();
        }
        catch (IOException exc)
        {
            System.err.println("Child I/O Transfer - " + exc);
        }
    }
}
